ion column

ion column

[′ī‚än ‚käl·əm]
(geophysics)
The trail of ionized gases in the trajectory of a meteoroid entering the upper atmosphere; a part of the composite phenomenon known as a meteor. Also known as meteor trail.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
For example, using a gallium liquid metal ion (LMI) source in a single-lens, 25-keV focused ion column will produce a 100-nm-dia beam with current densities of up to 0.7 A/CM 2.
The centers of two of the hexagonal type II rods are occupied by the column [Ca.sup.2+] ions, while a third set of hexagonal centers is occupied by the [OH.sup.-] ion columns instead of cation columns, thus leading to the unusual stoichiometry.